Astable Multivibrator using IC 555 | Circuit diagram | Experiment | Breadboard Diploma | Btech

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Astable Multi vibrator using IC 555 | free running oscillator

Astablemultivibrator is also called free running multivibrator and is used as a square wave
oscillator. The transistors in the circuit do not have stable state. i.e. when Vcc is given, one transistor
turns ON (goes to saturation region) and the other turns OFF (goes to cut off region). After sometime
(determined by charging and discharging of the two capacitors in the circuit), the ON transistor is
turns OFF and the OFF transistor turns ON. This cycle repeats as long as the supply is given.

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